Effective Dirac Neutrino Mass Operator in the Standard Model With a Local Abelian Extension
Effective Dirac Neutrino Mass Operator in the Standard Model With a Local Abelian Extension
复制标题
具有局部阿贝尔扩展的标准模型中的有效狄拉克中微子质量算符
作者：
Diego Restrepo;D. Suárez
给出了标准模型(SM)右手单态手征费米子的局域阿贝尔扩张的反常抵消条件的48种解。它们中至少有两个获得了有效的轻狄拉克中微子质量，而另两个则通过局域阿贝尔对称性的自发对称性破缺获得了重质量，形成了一个多分量、多世代费米子暗物质的暗扇区。相应的有效狄拉克中微子质量算符可以通过引入额外的标量或在某些情况下施加额外的生焦条件，在树级或辐射水平上实现。以狄拉克-费米子暗物质的Dirac-Zee模型为例，说明了中微子和暗物质的唯象基本是相互独立的。
We present 48 types of solutions to the anomaly cancellation conditions of local Abelian extensions of the Standard Model (SM) with right-handed SM-singlet chiral fermions. At least two of them acquire effective light Dirac neutrino masses, while the others get heavy masses from the spontaneous symmetry breaking of the local Abelian symmetry, forming a dark sector with multi-component and multi-generational fermionic dark matter. The corresponding effective Dirac neutrino mass operator can be realized at tree-level or radiatively by introducing extra scalars, and in some cases after imposing extra scotogenic conditions. The Dirac Zee model with Dirac fermionic dark matter is presented as an example of model where the neutrino and dark matter phenomenology are basically independent of each other.